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Year 3 - Science

Light and seeing

Introduction to light and shadows

Unit Summary

This unit explores the nature of light, recognising that light is needed to see and that dark is the absence of light. It covers how light reflects and shadow formation. The unit emphasises practical tests, observations, accurate measuring, and using evidence to support findings.

Lesson Summary

You will learn to explain that light is necessary for us to see things.

Key Notes

  • We use our eyes to see objects.
  • We need light to be able to see.
  • Darkness is when there is there no light.
  • We often need to rely on other senses when there is no light.

Vocabulary To Learn

  • eye: The eyes are the organs with which we see.
  • see: We use our sense of sight to see things. We use our eyes to see.
  • light: We can detect light with our eyes in order to see things.
  • dark: Dark means without light.

Common Mistakes To Avoid

  • Humans can see without light.

3 Quick Questions (With Answers)

1. Explain the scientific idea in this lesson using two key points.

We use our eyes to see objects. We need light to be able to see.

2. Define this scientific word and use it in context. 'eye'

The eyes are the organs with which we see. Include the word in a full scientific explanation, not as a single label.

3. Correct this common scientific misunderstanding.

Mistake: Humans can see without light. Correction: Explanation of how humans can see with a little light but cannot see when no light is present.

More Lessons In This Unit

Browse all guides in the Year 3 Science guide library.